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Digital switched hydraulics

Min PAN, Andrew PLUMMER

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2,   Pages 225-231 doi: 10.1007/s11465-018-0509-7

Abstract:

This paper reviews recent developments in digital switched hydraulics particularly the switched inertance hydraulic systems (SIHSs). The performance of SIHSs is presented in brief with a discussion of several possible configurations and control strategies. The soft switching technology and high-speed switching valve design techniques are discussed. Challenges and recommendations are given based on the current research achievements.

Keywords： digital hydraulics     switched inertance hydraulic systems     energy efficiency     high-speed switching valve     fluid-bornenoise    

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Air-borne noise of thermal module and system for notebook personal computers: experimental study

SHI Junye, JIANG Cailing, QIAO Junsheng, CHEN Jiangpin, LI Xiaoping, ZHANG Xiaojun

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 174-178 doi: 10.1007/s11708-008-0034-1

Abstract: Because the fan causes air-borne noise and affects the user’s comfort, the acoustic characteristics ofExperiments were conducted to study the noise sources, the noise characteristic and the main factorsinfluencing the noise level.The difference between the air-borne noise of the thermal module and the whole computer system was analyzedThe influence of I/O ports on the air-borne noise was also studied experimentally.

Keywords： air-borne     attention     propagating     characteristic     personal computer    

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Review of the LNG intermediate fluid vaporizer and its heat transfer characteristics

Frontiers in Energy 2022, Volume 16, Issue 3,   Pages 429-444 doi: 10.1007/s11708-021-0747-y

Abstract: The intermediate fluid vaporizer (IFV), different from other liquefied natural gas (LNG) vaporizers,Moreover, studies on the fluid flow and heat transfer behaviors of the supercritical LNG inside the tubesand the condensation heat transfer of the intermediate fluid outside the tubes are summarized.

Keywords： intermediate fluid vaporizer     design of structure and intermediate fluid     condensation heat transfer    

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Review of fluid and control technology of hydraulic wind turbines

Maolin CAI, Yixuan WANG, Zongxia JIAO, Yan SHI

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 312-320 doi: 10.1007/s11465-017-0433-2

Abstract:

This study examines the development of the fluid and control technology of hydraulic wind turbinesThe current state of hydraulic wind turbines as a new technology is described, and its basic fluid model

Keywords： wind turbine     hydraulic system     fluid model     control technology    

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Design of noise-reduction seats for high-speed trains

Xiaojun DENG, Yanju ZHAO, Haijin ZHANG, Renzhong SHUAI, Leiwei ZHU

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 3,   Pages 385-389 doi: 10.1007/s11465-017-0438-x

Abstract: reduce noise.interior noise spectral characteristics.seats substantially reduced the noise in an entire train car.noise level at a standard point in the passenger car by 1.5 dB.Therefore, the noise-reduction seats are effective in noise reduction.

Keywords： high-speed train     sound-absorbing materials     perforated board     noise-reduction seats    

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Computational fluid dynamics simulation of aerosol transport and deposition

Yingjie TANG, Bing GUO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 362-377 doi: 10.1007/s11783-011-0365-8

Abstract: In this article computational fluid dynamics (CFD) simulation of aerosol transport and deposition, i.e

Keywords： computational fluid dynamics (CFD)     aerosol     transport     deposition    

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Investigation of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational fluid

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1149-1163 doi: 10.1007/s11705-021-2096-0

Abstract: The novelty of this work is the computational fluid dynamic model combined with the novel carbon dioxide

Keywords： carbon dioxide photoreduction     computational fluid dynamic simulation     kinetic model     Langmuir adsorption    

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Anovel approach of noise statistics estimate using H∞ filter in target tracking

Xie WANG,Mei-qin LIU,Zhen FAN,Sen-lin ZHANG

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 5,   Pages 449-457 doi: 10.1631/FITEE.1500262

Abstract: Noise statistics are essential for estimation performance.In practical situations, however, a priori information of noise statistics is often imperfect.Previous work on noise statistics identification in linear systems still requires initial prior knowledgeof the noise.Then by applying state estimates obtained from the H∞ filter, better estimates of the noise mean and

Keywords： Noise estimate     H∞     filter     Target tracking    

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Wind-induced vibration control of Hefei TV tower with fluid viscous damper

Zhiqiang ZHANG , Aiqun LI , Jianping HE , Jianlei WANG ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 249-254 doi: 10.1007/s11709-009-0038-x

Abstract: The Hefei TV tower is taken as an analytical case to examine the control method with a fluid viscousFinally, a dynamic model is proposed to study the wind-induced vibration control analysis using viscous fluidwind-induced responses and the wind vibration input energy of the tower are decreased greatly by using a fluid

Keywords： high-rise structure     wind-induced response     fluid viscous damper     vibration control    

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Ambient Noise Tomography for Coral Islands Article

Shaohong Xia, Changrong Zhang, Jinghe Cao

Engineering 2023, Volume 25, Issue 6,   Pages 182-193 doi: 10.1016/j.eng.2021.09.022

Abstract: recorded by a dense array on an isolated coral island in the South China Sea, we analyzed the ambient noisecharacteristics and obtained a 3D subsurface structure of the coral island using ambient noise tomographyWe made the following findings: ① The ambient noise frequencies can be roughly categorized into threeThe spectral characteristics of the noise below 5 Hz were consistent at different stations, but therewere significant differences in the characteristics of the noise above 5 Hz. ② For ambient noise frequencies

Keywords： Coral island     Ambient noise tomography     Engineering geology     South China Sea    

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Investigation of flow dynamics and decrease of vortex noise inside volute of centrifugal fans

LI Chunxi, WANG Songling

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 235-240 doi: 10.1007/s11708-008-0040-3

Abstract: dynamics inside the volute of a G4-73No.8D centrifugal fan was simulated numerically using a computational fluidThe generation, evolution, and noise of the vortex were investigated when cylinder-shaped and cone-cylinder-shapedExperimental results indicated A-sound level and spectrum noise of the refitted fan decreased and thetwo anti-vortex rings were effective in decreasing vortex noise.more effective than the cylinder-shaped one in breaking large-scale vortexes and decreasing vortex noise

Keywords： cylinder-shaped     evolution     computational     effective     large-scale    

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Effect of gastric fluid on adsorption and desorption of endocrine disrupting chemicals on microplastics

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1525-8

Abstract:

• Effect of gastric fluid on EDCs adsorption-desorption to microplastics

Keywords： Microplastics     Gastric fluid     Endocrine-disrupting chemicals     Adsorption     Desorption    

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Application of python-based Abaqus preprocess and postprocess technique in analysis of gearbox vibration and noise

Guilian YI, Yunkang SUI, Jiazheng DU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 229-234 doi: 10.1007/s11465-011-0128-z

Abstract:

To reduce vibration and noise, a damping layer and constraint layer are usually pasted on the innersurface of a gearbox thin shell, and their thicknesses are the main parameters in the vibration and noiseacceleration of the point on the gearbox surface is the main index that can reflect the vibration and noisepoint, and the normal accelerations of different points can reflect the degree of the vibration and noisestructure, and the vibration acceleration level is adopted to measure the degree of the vibration and noise

Keywords： Abaqus secondary development     Python language     vibration and noise reduction     K-S function     vibration acceleration    

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Detection of digestive malignancies and post-gastrectomy complications via gastrointestinal fluid examination

Lei Huang,Aman Xu

Frontiers of Medicine 2017, Volume 11, Issue 1,   Pages 20-31 doi: 10.1007/s11684-016-0493-4

Abstract: Herein, the current progress in the relationship between gastrointestinal fluid analyses and GC is systematicallyGastrointestinal fluid examination could also predict the adverse effects of postgastrectomy, such asGastric fluid markers should be further studied to reveal the early predicators of malignancy and complications

Keywords： gastrointestinal fluid     gastric carcinoma     biomarker     diagnosis     prognosis     gastrectomy     adverse events    

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Integrated virtual-design methods for forecasting radiated noise of single cylinder diesel block

GUO Lei, HAO Zhiyong, XU Hongmei, LIU Lianyun

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 416-421 doi: 10.1007/s11708-008-0097-z

Abstract: Finally, the radiated noise such as sound power level and efficiency in the out sound field were obtained

Keywords： bearing     dynamical     frequency response     dynamical simulation     hybrid dynamical    

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Title Author Date Type Operation

Digital switched hydraulics

Min PAN, Andrew PLUMMER

Journal Article

Air-borne noise of thermal module and system for notebook personal computers: experimental study

SHI Junye, JIANG Cailing, QIAO Junsheng, CHEN Jiangpin, LI Xiaoping, ZHANG Xiaojun

Journal Article

Review of the LNG intermediate fluid vaporizer and its heat transfer characteristics

Journal Article

Review of fluid and control technology of hydraulic wind turbines

Maolin CAI, Yixuan WANG, Zongxia JIAO, Yan SHI

Journal Article

Design of noise-reduction seats for high-speed trains

Xiaojun DENG, Yanju ZHAO, Haijin ZHANG, Renzhong SHUAI, Leiwei ZHU

Journal Article

Computational fluid dynamics simulation of aerosol transport and deposition

Yingjie TANG, Bing GUO

Journal Article

Investigation of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational fluid

Journal Article

Anovel approach of noise statistics estimate using H∞ filter in target tracking

Xie WANG,Mei-qin LIU,Zhen FAN,Sen-lin ZHANG

Journal Article

Wind-induced vibration control of Hefei TV tower with fluid viscous damper

Zhiqiang ZHANG , Aiqun LI , Jianping HE , Jianlei WANG ,

Journal Article

Ambient Noise Tomography for Coral Islands

Shaohong Xia, Changrong Zhang, Jinghe Cao

Journal Article

Investigation of flow dynamics and decrease of vortex noise inside volute of centrifugal fans

LI Chunxi, WANG Songling

Journal Article

Effect of gastric fluid on adsorption and desorption of endocrine disrupting chemicals on microplastics

Journal Article

Application of python-based Abaqus preprocess and postprocess technique in analysis of gearbox vibration and noise

Guilian YI, Yunkang SUI, Jiazheng DU

Journal Article

Detection of digestive malignancies and post-gastrectomy complications via gastrointestinal fluid examination

Lei Huang,Aman Xu

Journal Article

Integrated virtual-design methods for forecasting radiated noise of single cylinder diesel block

GUO Lei, HAO Zhiyong, XU Hongmei, LIU Lianyun

Journal Article